This is a shortish one, not quite a drabble but not very long I couldn't figure out how to expand it so its a shorty

"See if you had listened to Dad, we could of finished this hours ago" Carlo pointed out, Natty nodding.

"Be quiet" Anderson grumbled

"Dad said check to the docks and now we are at the docks we find the drugs" Natty continued, "If you hadn't been so stubborn we could of come here when it was actually light out"

"Nobody said you kids had to come" Anderson snapped, "It's almost midnight, you should be at home"

"We were the ones who got you guys this info" Carlo snarled

Lestrade sighed, Sherlock and John were currently inside the building helping with the bust while the kids, who had followed them here, waited outside on their fathers orders. The docks were cold that night but it didn't bother Carlo or Natty one bit.

"Yeah so shut it Anderson" Natty stuck her tongue out, Anderson gave her a shove , sending her stumbling back and over the edge of the dock into the water.

"NAtty!" Carlo yelled

"Relax, the waters deep and clear she won't hit her head" Anderson muttered, "She'll be able to swim to the ladder in no time"

"Anderson!" Lestrade scolded, "You can't go pushing kids off the docks!"

"I didn't mean to" He replied honestly but he didn't seem to care.

"What's going on?" John asked as Sherlock and he returned, the detectives eyes knitted together when he saw Carlo alone with no Natty in sight.

"Andeson pushed Natty in the water!" Carlo cried looking worried, seriously what is with this kid, worst case scenario the girl gets a cold big deal. He was expecting a scathing comment from the freak, instead much to his surprise he said nothing, but flung off his black coat and dove straight into the black water. John grabbed the coat from the air.

"What the-" Anderson started

"Natty can't swim!" John bellowed his face turning an angry red and he glared at Anderson.

"Oh" Was all he managed to get out Sure he hated the little brats but he didn't mean to drown her. John looked as if he was about to punch him when the sound of gasping came from below them.

Sherlock had one arm around Natty who was coughing up the water she swallowed, using the other to swim to the ladder and somehow managed to climb in using only one hand. Gently he placed Natty down on the ground, she wrapped her arms around herself shivering as she walked behind the freak, shooting Anderson a withering look.

"John, my coat" Sherlock asked, grabbing it and wrapping it round the soaking little girl. It looked quite comical really, Natty was hardly visible in the tall mans coat, but she stopped shivering all the same. Sherlock then turned to Anderson.

"Oh dear" John whispered, "Thats the same look he gave that kidnapper when Lisa-"

John never finished the sentence because by then Sherlock's fist had already connected with Anderson's nose with a satisfying spray of blood. Anderson unsuccessfully tried to cuff the detective back he seemed to loose interest.

He scooped the mass of coat that was Natty up into his arms and signaled for Carlo to follow.

"Come on John, Mira will kill me when she sees Natty in this state"

I really liked the character of Natty, I imagine her as a blonde curly haired tom boyish girl.